xml-dev - Restrictions on existence of attributes?

Restrictions on existence of attributes?

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To: <xml-dev@lists.xml.org>
Subject: Restrictions on existence of attributes?
From: "Howard Bartel" <hbartel@convedia.com>
Date: Mon, 26 Jun 2006 17:09:27 -0700
Importance: Normal

How do I specify that an element MUST have ONLY ONE of a set of possible
attributes?
I understand that there is a "choice" option but it seems that this only
applies to elements, not attributes within an element.

Thanks,
Howard

Follow-Ups:
- RE: [xml-dev] Restrictions on existence of attributes?
  - From: "Stan Kitsis" <skits@microsoft.com>
- Re: [xml-dev] Restrictions on existence of attributes?
  - From: Eric van der Vlist <vdv@dyomedea.com>
- Getting some nice XML-RSS feeds going...
  - From: David Lyon <david.lyon@preisshare.net>
- Re: [xml-dev] Restrictions on existence of attributes?
  - From: Rick Jelliffe <rjelliffe@allette.com.au>

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